The source contradicts the Obama administration's claim that no help was available.

The Obama administration has insisted from the start that there was no help available for the Americans under assault in Benghazi on September 11. The first in three exclusive reports alleging that that claim is false aired on tonight’s Special Report.

Because the special operator in the video above is fearful of reprisal, his identity was concealed. The man, who watched the events unfold and has debriefed those who were part of the response, told Fox News’ Adam Housley that the C110 special forces group “was doing a training exercise not in the region of Northern Africa but in Europe. And they had the ability to react and respond.”

The operator believes that the force would have been able to be travel from Croatia to Benghazi within four hours – in time for the second attack.

He says that many connected to Benghazi are afraid to talk. “The problem is you’ve got guys … in the special operations community who are still active and still involved. And they would be decapitated if they came forward with information that could affect high-level commanders.”

** UPDATE ** President Obama was asked about Benghazi at his news conference Tuesday morning.